Wireless transmission system

1. A wireless transmission system, comprising: a base station that transmits and receives a radio wave in a frequency band selected from a range of 1 GHz to 170 GHz; a plurality of electromagnetic wave reflectors positioned along at least a part of a production line and comprising a plurality of panels respectively such that each of the panels has a reflective surface configured to reflect the radio wave; and a support body comprising electric connector part and connecting the plurality of electromagnetic wave reflectors such that the electric connector part is configured to share a reference potential of reflection between the panels of the electromagnetic wave reflectors, wherein the base station is positioned to transmit and receive the radio wave to and from manufacturing equipment installed in the production line.

2. The wireless transmission system as claimed in claim 1, wherein the base station is positioned closer to the production line than a line horizontally extending from the reflective surface.

3. The wireless transmission system as claimed in claim 2, wherein the base station includes a first base station and a second base station positioned at both ends of the production line in a longitudinal direction, and the manufacturing equipment communicates with at least one of the first base station and the second base station in the frequency band.

4. The wireless transmission system as claimed in claim 2, wherein the reflective surface of each of the panels in the electromagnetic wave reflectors has a symmetric reflective region configured to reflect a radio wave at a reflection angle same as an incident angle of the radio wave, and an asymmetric reflective region configured to reflect the radio wave at an angle different from the incident angle.

5. The wireless transmission system as claimed in claim 4, wherein the base station is positioned such that the incident angle of the radio wave transmitted from the base station and incident onto the asymmetric reflective region is 50° or more.

6. The wireless transmission system as claimed in claim 4, wherein the reflective surface of each of the panels in the electromagnetic wave reflectors is configured such that an area of the asymmetric reflective region covers at least a first Fresnel zone determined by a frequency of the radio wave.

7. The wireless transmission system as claimed in claim 2, wherein the base station is positioned such that an incident angle of the radio wave transmitted from the base station and incident onto the reflective surface is 50° or more.

8. The wireless transmission system as claimed in claim 2, wherein the reflective surface of each of the panels in the electromagnetic wave reflectors has a mesh, a grating, or an array of holes formed at a density that reflects the radio wave of the frequency band, and an average period of the mesh, the grating, or the array of holes formed at the density is one fifth or less of a free-space wavelength of the frequency band.

9. The wireless transmission system as claimed in claim 2, wherein the reflective surface of each of the panels in the electromagnetic wave reflectors comprises at least one of a reflector and a metal reflector.

10. The wireless transmission system as claimed in claim 2, wherein the plurality of electromagnetic wave reflectors includes a first plurality of electromagnetic wave reflectors and a second plurality of electromagnetic wave reflectors positioned on respective sides of the production line along at least the part of the production line.

11. The wireless transmission system as claimed in claim 1, wherein the plurality of electromagnetic wave reflectors includes a first plurality of electromagnetic wave reflectors and a second plurality of electromagnetic wave reflectors positioned on respective sides of the production line along at least the part of the production line.

12. The wireless transmission system as claimed in claim 11, wherein the base station includes a first base station and a second base station positioned at both ends of the production line in a longitudinal direction, and the manufacturing equipment communicates with at least one of the first base station and the second base station in the frequency band.

13. The wireless transmission system as claimed in claim 11, wherein the reflective surface of each of the panels in the electromagnetic wave reflectors has a symmetric reflective region configured to reflect a radio wave at a reflection angle same as an incident angle of the radio wave, and an asymmetric reflective region configured to reflect the radio wave at an angle different from the incident angle.

14. The wireless transmission system as claimed in claim 1, wherein the base station includes a first base station and a second base station positioned at both ends of the production line in a longitudinal direction, and the manufacturing equipment communicates with at least one of the first base station and the second base station in the frequency band.

15. The wireless transmission system as claimed in claim 1, wherein the reflective surface of each of the panels in the electromagnetic wave reflectors has a symmetric reflective region configured to reflect a radio wave at a reflection angle same as an incident angle of the radio wave, and an asymmetric reflective region configured to reflect the radio wave at an angle different from the incident angle.

16. The wireless transmission system as claimed in claim 15, wherein the base station is positioned such that the incident angle of the radio wave transmitted from the base station and incident onto the asymmetric reflective region is 50° or more.

17. The wireless transmission system as claimed in claim 15, wherein the reflective surface of each of the panels in the electromagnetic wave reflectors is configured such that an area of the asymmetric reflective region covers at least a first Fresnel zone determined by a frequency of the radio wave.

18. The wireless transmission system as claimed in claim 1, wherein the base station is positioned such that an incident angle of the radio wave transmitted from the base station and incident onto the reflective surface is 50° or more.

19. The wireless transmission system as claimed in claim 1, wherein the reflective surface of each of the panels in the electromagnetic wave reflectors has a mesh, a grating, or an array of holes formed at a density that reflects the radio wave of the frequency band, and an average period of the mesh, the grating, or the array of holes formed at the density is one fifth or less of a free-space wavelength of the frequency band.

20. The wireless transmission system as claimed in claim 1, wherein the reflective surface of each of the panels in the electromagnetic wave reflectors comprises at least one of a reflector and a metal reflector.